A Multicarrier CDMA System Using Divided Spreading Sequence for Time and Frequency Diversity 


Vol. 27,  No. 6, pp. 569-578, Jun.  2002


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  Abstract

This paper proposes a new multicarrier code division multiple access (CDMA) system. l1le proposed multicarrier CDMA system provides the advantages that the transmission bandwidth is more efficiently utilized by using divided spreading sequence, time and frequency diversity is achieved in frequency selective multipath fading channel, and inter-carrier interference (ICI) can be minimized by using specific data and code pattern In this system, transmitted data bits are serial-to-parallel converted to some parallel branches. On each branch each bit is direct-sequence spread-spectrum modulated by divided spreading sequences and transmitted using orthogonal carriers. The receiver provides a Rake for each carrier, and (he outputs of Rakes are combined to get time and frequency diversity. This multiearrier CDMA system allows additional flexibility in the choice of system parameters. Upon varying system pam meters, bit error rate (BER) performance is examined for the proposed multicarrier CDMA system. Simulation results show that the proposed mulricarrier CDMA scheme can achieve better performance than the other types of conventional multi carrier CDMA systems.

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  Cite this article

[IEEE Style]

H. Park, Y. Joo, Y. Kim, K. H. Tchah, "A Multicarrier CDMA System Using Divided Spreading Sequence for Time and Frequency Diversity," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 6, pp. 569-578, 2002. DOI: .

[ACM Style]

Hyung-Kun Park, Yang-Ick Joo, Yongsuk Kim, and Kyun Hyon Tchah. 2002. A Multicarrier CDMA System Using Divided Spreading Sequence for Time and Frequency Diversity. The Journal of Korean Institute of Communications and Information Sciences, 27, 6, (2002), 569-578. DOI: .

[KICS Style]

Hyung-Kun Park, Yang-Ick Joo, Yongsuk Kim, Kyun Hyon Tchah, "A Multicarrier CDMA System Using Divided Spreading Sequence for Time and Frequency Diversity," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 6, pp. 569-578, 6. 2002.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880